The trial period for all CC apps is now only 7 days. You can subscribe and get another 14 days but you have to make sure you Cancel the subscription before that 14 day limit is up. Doing so after that time period will incur a surcharge of IIRC 50% of the remaining cost.

A 7 day trial is almost worthless. A program as big as Lightroom should have a 30 day trial.

[Adobe] has been running some tests over the past couple months, and says the changes better align with how individuals are actually using the trial software – meaning the degree and duration of time they use them the most after initial installation. By moving to seven days, Adobe feels they can follow up better with the customer when the experience is freshest than if it happened a month later. It also gives users greater incentive to bump up the priority of the new software evaluations. Given the accelerating pace of change in technology (and pretty much everything else moving faster these days), these findings aren’t entirely surprising.

The other big reason is because long trial periods are somewhat a holdover from the old days where purchasing Adobe software was a huge upfront cost and major investment… Adobe CS6 (released four years ago now) used to cost many hundreds or often thousands of dollars to purchase. Now, by contrast, after your free first week, CC offers monthly or annual subscription plans for as little as US$9.99 a month (for Photoshop & Lightroom), with ongoing upgrades included.